presentation

<p>La 9ème étape du Trans’Alpes franchit la fenêtre de l’Arpette pour continuer le contournement du massif du Mont Blanc par le coté suisse. Étape assez courte en distance mais les 1000m de montée à la fenêtre d’Arpette sont physique, la descente vers le Val d’Arpette longue et technique dans sa première partie. Ambiance de haute montagne garantie.</p>

fiche_technique

<p><span class="item-tech">Lieu de départ</span> Chalet des Grands, Val du Trient, Valais, Suisse<br />
<span class="item-tech">Type de parcours</span> randonnée itinérante en haute montagne<br />
<span class="item-tech">Distance à parcourir</span> 11,2 km<br />
<span class="item-tech">Dénivelé positif / négatif cumulé</span> +1040 m / -1500 m<br />
<span class="item-tech">Durée totale estimée</span> 4h à 5h<br />
<span class="item-tech">Altitude min / max</span> : 1035 m / 2665 m<br />
<span class="item-tech">Balisage</span> sentiers cairnés et balisés TMB à partir du Glacier du Trient<br />
<span class="item-tech">Équipement et matériel</span> aucun<br />
<span class="item-diff">Précisions sur la difficulté</span> Descente raide et technique sous la Fenêtre d’Arpette (pierrier, éboulis)</p>

acces_au_site

<p>Le Chalet des Grands depuis l’étape 8 du Trans’Alpes.</p>

texte_carte

<p><a href="https://climbing7.com/wp-content/uploads/2025/10/transalpes_e09_chalets_grands_relais_arpettes.gpx">Le Chalet des Grands depuis l’étape 9 du Trans’Alpes</a>.</p>
<p><img loading="lazy" decoding="async" class="alignnone size-full wp-image-46442" src="https://climbing7.com/wp-content/uploads/2025/10/carte-e9-chalet-grands-relais-arpette.webp" alt="" width="1000" height="629" srcset="https://climbing7.com/wp-content/uploads/2025/10/carte-e9-chalet-grands-relais-arpette.webp 1000w, https://climbing7.com/wp-content/uploads/2025/10/carte-e9-chalet-grands-relais-arpette-300x189.webp 300w, https://climbing7.com/wp-content/uploads/2025/10/carte-e9-chalet-grands-relais-arpette-768x483.webp 768w" sizes="auto, (max-width: 1000px) 100vw, 1000px" /></p>

parcours

<p>Du Chalet des Grands, descendre jusqu’au pont sur le Trient. Traverser et passer à côté du Glacier du Trient. Prendre alors le sentier qui monte sur le versant ouest pour rejoindre après une partie finale plus raide et rocheuse, la Fenêtre d’Arpette qui fait basculer du Val du Trient vers le Val d’Arpette.</p>
<p>Descendre la section raide et pierreuse sous la fenêtre puis franchir un grand éboulis cairné et balisé. La seconde partie plus bas est plus tranquille et moins raide.  On termine sur une piste qui rejoint le Relais d’Arpette où on trouve un camping avec douche et un espace pour cuisiner abrité (parfait pour un jour de pluie comme le notre…)</p>

galerie

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presentation

La 9ème étape du Trans’Alpes franchit la fenêtre de l’Arpette pour continuer le contournement du massif du Mont Blanc par le coté suisse. Étape assez courte en distance mais les 1000m de montée à la fenêtre d’Arpette sont physique, la descente vers le Val d’Arpette longue et technique dans sa première partie. Ambiance de haute montagne garantie.

fiche_technique

<span class="item-tech">Lieu de départ</span> Chalet des Grands, Val du Trient, Valais, Suisse<br/>
<span class="item-tech">Type de parcours</span> randonnée itinérante en haute montagne<br/>
<span class="item-tech">Distance à parcourir</span> 11,2 km<br/>
<span class="item-tech">Dénivelé positif / négatif cumulé</span> +1040 m / -1500 m<br/>
<span class="item-tech">Durée totale estimée</span> 4h à 5h<br/>
<span class="item-tech">Altitude min / max</span> : 1035 m / 2665 m<br/>
<span class="item-tech">Balisage</span> sentiers cairnés et balisés TMB à partir du Glacier du Trient<br/>
<span class="item-tech">Équipement et matériel</span> aucun<br/>
<span class="item-diff">Précisions sur la difficulté</span> Descente raide et technique sous la Fenêtre d’Arpette (pierrier, éboulis)

acces_au_site

Le Chalet des Grands depuis l’étape 8 du Trans’Alpes.

texte_carte

<p><a href="https://climbing7.com/wp-content/uploads/2025/10/transalpes_e09_chalets_grands_relais_arpettes.gpx">Le Chalet des Grands depuis l’étape 9 du Trans’Alpes</a>.</p>

carte_image_1

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parcours

<p>Du Chalet des Grands, descendre jusqu’au pont sur le Trient. Traverser et passer à côté du Glacier du Trient. Prendre alors le sentier qui monte sur le versant ouest pour rejoindre après une partie finale plus raide et rocheuse, la Fenêtre d’Arpette qui fait basculer du Val du Trient vers le Val d’Arpette.</p>
<p>Descendre la section raide et pierreuse sous la fenêtre puis franchir un grand éboulis cairné et balisé. La seconde partie plus bas est plus tranquille et moins raide.  On termine sur une piste qui rejoint le Relais d’Arpette où on trouve un camping avec douche et un espace pour cuisiner abrité (parfait pour un jour de pluie comme le notre…)</p>

galerie

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